One of the above mentioned houses I owned for 13 years and rented to only 1 tenant who wanted the excellent school system there for their kids.

Excellent, Docs are signed and there is a doc signing offering through gmail that was used to complete the signatures.

It would apper to me Brandon you are doing an excellent job.

This is true for even the largest, most sophisticated institutional investors.DATA SOURCESIn addition to those listed on the excellent article that Bryan H. linked to above, there are:Axiometrics / REIS / Pierce-Eislen: These folks conduct phone surveys on a monthly basis and publish reports and analysis.

For example, comps could be 200k for homes with excellent interior condition.

EXCELLENT post @Brandon Curson - curious where you got 4.25% tenant placement fee from.

Also, many of these gurus are excellent at up selling you into higher ticket items.  

There's a lot to consider, like type of unit, contractors, etc. but after we get our initial investment back, the rental profit could be quite excellent. 

Looking to learn as much as I can and find a niche to excel in.

A lot will depend on how far they got with the plumbing and electrical, what was already permitted and inspected, and what was just abandoned.You will certainly need a GC to deal with the permitting and inspections.It could easily be $50k to $100k or more, depending on what has been done, what hasn't been done, and what has to be re-done.That being said, a friend gave me some excellent advice about estimating rehab costs once that I've never forgotten: "Add up exactly what you think it's going to cost, then double it!".